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A transmission grating can be used as a frequency scanned antenna, provided most of the incident power is transferred to the diffracted mode, i.e., the grating is blazed. A design procedure for blazing a rectangular bar transmission grating is presented. The performance of a number of gratings is presented. Efficiencies in excess of 99% can be obtained at a single frequency. A scan range of 55° between 3‐dB points can be obtained.
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Shmoys et al. (1983) studied this question.
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